Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c19c18db5f4c015…

MALICIOUS

PDF

7.1 KB Created: 2012-05-26 20:02:26
MD5: 4daa6a473d351bbb01705ae5b8448bdc SHA-1: 2e3a534dab68dca98f199d382bfde72c91828461 SHA-256: 7c19c18db5f4c0158e24d4eaadd58c82e047fa00695e2a367224899c5408bd59
98 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File Execution T1204.002 Malicious File Execution: Malicious PDF

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-156969-1' indicates this PDF is a known exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic further suggests that a script is embedded within the PDF stream, likely to facilitate the download and execution of a secondary payload. The document body contains fragmented text that does not provide clear user-facing lures, but the technical indicators strongly suggest exploitation.

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-156969-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-156969-1
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0006.bin
dc79e8f6601477d759fe9b257fffb336190b4314c87657c8d3c372d491202bba
pdf-embedded-file PDF EmbeddedFile object 6 at offset 0x9DC 6988 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 long base64-like blob(s).